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(No Model.) 4 Sheets-#Sheet 1.

A. STROMBBRG.

BURGLAR ALARM CABINET.

(No Model.)

` 4 eeeeeeeeeeee 2. -v STROMBERG. LAR ALARM CABINET.

No. 486,908. Patented Nov. 29, 1892 (No Model.) 4 Sheets-Sheet@ A. STRGM'BERG.

. BURGLAR ALARM CABINET. 18o-.488,908 Patented N0v.'2.9,1892.

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UNITED STATES- PATENT OFFICE.

ALFRED STROMBERG, OF OHIOAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO MARKS SIMONS, OF SAME PLACE.

BU RGLAR-ALARM CABIN ET.

SPECIFICATION forming part of Letters Patent No. 486,908, dated November 29, 1892.

Application filed July 9, 1892. Serial No. 439,489. (No model.)

To LZZ whom t may concern.-

Be it known that I, ALFRED STROMBERG, a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Burglar Alarm Cabinets, (Case No.4,) of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forminga part of this specification.

My invention relates to burglar-alarm protection for safes; and its object is to provide a cabinet surrounding a safe, to which cabinet a burglar-alarm circuit is attached, and which may be opened readily to give access to the safe Without theinconvenience of shutters or swinging doors.

My invention consists in a case or cabinet which is adapted to fit the safe or safes which it is intended to protect, this cabinet being provided with the burglar-alarm-circuit described in my patent, No. 483,728, dated October 4, 1892, and provided with a flexible curtain so placed that :it may be raised to give access to the safe-door, and in other features of construction, which I will now proceed to explain.

Referring to the drawings, Figure l shows a front elevation of a cabinet adapted to protect three safes. One curtain is shown raised, thus exposing the safe. Fig. 2 shows the detail of one of the stanchions which divides the front of the cabinet. contact-spring in the groove in which the curtain slides depressed by the curtain. Fig. 4 shows a portion of one of the swinging stanchiens which I employ. Fig. 5 is a diagram of the circuits. mounting the tin-foil upon the rigid portion of the cabinet.

Similar letters of reference refer to similar parts throughout the different views.

The cabinet a is adapted to entirely surround the safe and is protected by the circuit described in my application, Serial No. 425,030. The curtain or exible front b of the cabinet is adapted to be lifted and carried back through a place provided for it over the top and back of the safe. The method of making this flexible curtain or front of the cabinet is well known, and as it is not an essen- Fig. 3 shows the.

Fig. 6 shows the method of` tial feature of my invention I do not deem it necessary to describe it further. Upon the sill c of the opening, upon which the curtain falls when it is closed, I arrange contactpoints, by means of which the circuit through the curtain is closed when the curtain is closed. To carry the curtain far enough beyond the front of the vault to avoid contact with the handles of the safe-door, I provide the stanchions d d in which the curtains slide with hinges which permit them to be swung, as shown in Fig. 4E. In these stanchiens is provided the channel c', which acts as a guide to the flexible curtain. These hinged stanchions are also protected with aburglaralarm circuit, as is the rest of the cabinet, and in these stanchions is also provided the contact-spring d', one spring being placed in each channel of each stanchion. Where only one safe is to be protected in the manner described, I omit the. intermediate stanchions e e. The detail of the stanchion e is shown in Fig. 2. These stanchions are made removable at will, so that when access is desired to the safes protected by the cabinet the curtain may be raised and the stanchions removed, thus giving free access to the safes.` The dogs f f at the top of the stanchions are adapted to lit recesses f f upon the upper part of the cabinet-frame. The spring contact-point g is adapted to press a plate in the upper part of the cabinet-frame, thus closing the circuit between the cabinet-frame and the conductor upon the stanchion. The circuits through the Various parts of the cabinet are shown in Fig. 5. Upon the inner face and close to the bottom of the stanchions e e I arrange contact-plates e', connected with the cirl Vspring-contacts g, by means of which, in connection with said contact-plates, the circuits are closed, are placed upon the front ofthe IOO cabinet, one being placed near the top and the other near thebottom, and mounted upon a permanent stanchion cl2. (Shown in Fig. 4.)

The circuit-closing spring d is connected into three sides of the safe, and any disarrangement of the curtain or of the stanchions or any penetration of the` cabinet will result in disarrangement of the circuit and the sending of an alarm in the manner described in my application, Serial No. 425,030. For convenience ,a switch 7c is provided, as described in the aforesaid application, for switching oii the circuit from the cabinet before the curtain is raised when it is desired to get access to the safe by any one who is authorized to do so. A lock may be provided to secure the curtain when drawn down, although `this is not usually required. In Fig. 6 I have shown the detail of the arrangement of circuits which I use ffor protecting the rigid portion of the cabinet-that is, the part covering the top, bottom, three sides, and a portion .of the front. The wide strip Zot tin-foil is placed upon the inner side of the cabinet, either directly upon the wood or upon some covering of the cabinet. Between this and the strip m1 place the insulating material (pref erably paper) fn, thestrip n being placed at right angles to the strip l. These two strips of tin-foil are adapted to form the two sides of the circuit, as shown inthe diagram of circuits in Fig. 4. This diagram will be readily understood in connection with my application Serial No. 425,030,

I have shown the apparatus at the central ot'tice simplyin diagrammatic form. The circuit passestrorn ground through the battery and central-ofice apparatus, through the top, through one side, the back, the other side, the bottom, and the front ot' the cabinet, thence to the hinged stanchion cl, through the curtains to the resistance-coil o, thence by means of the contacts upon the sill c to the curtains through strips placed thereon at right angles tothe circuit already described, thence through the other curtains, back through the sides, front, bottom, and back through the other side and top of the cabinet to ground at p.

I claiml. In a cabinet entirely surrounding a safe, the combination, with the ilexible curtain adapted to be raised to give access to the safe-door, of the swinging stanchions d d, provided with channels c c', which act as guides to said flexible curtain, and a sill c, upon which said curtain is adapted to fall, and contact-points on said sill, adapted to. make contact with plates connected to the circuits which are carried bysaidexible curtain, substantially as and for the purpose specified.

2. In a cabinet surrounding a safe, the combination, with the flexible curtain adapted to be brought dow-n over the face of the safe, of the swinging stanchion d and the stanchion e, each provided with channels which serve as guides for the lsaid curtain, whereby the said curtain is directed to the sill c, contactpoints carried upon said curtain and said stanchions and adapted to complete an elec- =tric circuit, whereby when said curtain or said stanchions are removed from their normal positions said circuit may be broken to give an alarrnsubs tantially as and for the purpose specified.

3. The combination, with a cabinet Glrrying' an electric circuit, ot' a iiexible curtain carryin gan electric circuitand adapted to close an opening in said cabinet, stanchions carrying slotsin which said curtain is adapted to slide, and contact-points carried upon said cu'rtain and said stanchions and adapted to complete an electric circuit, whereby when said curtain or said stanchions are removed from their normal positions, said circuit may be broken to give an alarm, substantially as described.

4. The combination, Witha cabinet carrying an electric circuit, of a flexible `curtain carrying an electric circuit and adapted to close an opening in said cabinet, a swinging stanchion and a removable stanchion, said stanchions carrying slots in which ,said curtain is adapted to slide, and contact-,points carried upon said cabinet, curtain, and `stanchions, whereby when said curtain or said stanchions are displaced from their normal positions the `circuit may be broken to give au alarm, substantially asdescribed.

In witness whereof I hereunto subscribe my name this 7th day of July, A. D.;1892.

ALFRED STROMBEBG.

Witnesses:

JOHN BARRETT, Jr., GEORGE L. CRAGG.

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